include/wx/docview.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        docview.h
   3 // Purpose:     Doc/View classes
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     01/02/97
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c)
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _WX_DOCH__
  13 #define _WX_DOCH__
  14
  15 #ifdef __GNUG__
  16     #pragma interface "docview.h"
  17 #endif
  18
  19 #include "wx/defs.h"
  20 #include "wx/list.h"
  21 #include "wx/cmndata.h"
  22 #include "wx/string.h"
  23 #include "wx/frame.h"
  24
  25 #if wxUSE_PRINTING_ARCHITECTURE
  26     #include "wx/print.h"
  27 #endif
  28
  29 class WXDLLEXPORT wxWindow;
  30 class WXDLLEXPORT wxDocument;
  31 class WXDLLEXPORT wxView;
  32 class WXDLLEXPORT wxDocTemplate;
  33 class WXDLLEXPORT wxDocManager;
  34 class WXDLLEXPORT wxPrintInfo;
  35 class WXDLLEXPORT wxCommandProcessor;
  36 class WXDLLEXPORT wxFileHistory;
  37 class WXDLLEXPORT wxConfigBase;
  38
  39 #if wxUSE_STD_IOSTREAM
  40   #include "wx/ioswrap.h"
  41 #else
  42   #include "wx/stream.h"
  43 #endif
  44
  45 // Document manager flags
  46 enum
  47 {
  48     wxDOC_SDI = 1,
  49     wxDOC_MDI,
  50     wxDOC_NEW,
  51     wxDOC_SILENT,
  52     wxDEFAULT_DOCMAN_FLAGS = wxDOC_SDI
  53 };
  54
  55 // Document template flags
  56 enum
  57 {
  58     wxTEMPLATE_VISIBLE = 1,
  59     wxTEMPLATE_INVISIBLE,
  60     wxDEFAULT_TEMPLATE_FLAGS = wxTEMPLATE_VISIBLE
  61 };
  62
  63 #define wxMAX_FILE_HISTORY 9
  64
  65 class WXDLLEXPORT wxDocument : public wxEvtHandler
  66 {
  67     DECLARE_ABSTRACT_CLASS(wxDocument)
  68
  69 public:
  70     wxDocument(wxDocument *parent = (wxDocument *) NULL);
  71     ~wxDocument();
  72
  73     // accessors
  74     void SetFilename(const wxString& filename, bool notifyViews = FALSE);
  75     wxString GetFilename() const { return m_documentFile; }
  76
  77     void SetTitle(const wxString& title) { m_documentTitle = title; };
  78     wxString GetTitle() const { return m_documentTitle; }
  79
  80     void SetDocumentName(const wxString& name) { m_documentTypeName = name; };
  81     wxString GetDocumentName() const { return m_documentTypeName; }
  82
  83     bool GetDocumentSaved() const { return m_savedYet; }
  84     void SetDocumentSaved(bool saved = TRUE) { m_savedYet = saved; }
  85
  86     virtual bool Close();
  87     virtual bool Save();
  88     virtual bool SaveAs();
  89     virtual bool Revert();
  90
  91 #if wxUSE_STD_IOSTREAM
  92     virtual wxSTD ostream& SaveObject(wxSTD ostream& stream);
  93     virtual wxSTD istream& LoadObject(wxSTD istream& stream);
  94 #else
  95     virtual wxOutputStream& SaveObject(wxOutputStream& stream);
  96     virtual wxInputStream& LoadObject(wxInputStream& stream);
  97 #endif
  98
  99     // Called by wxWindows
 100     virtual bool OnSaveDocument(const wxString& filename);
 101     virtual bool OnOpenDocument(const wxString& filename);
 102     virtual bool OnNewDocument();
 103     virtual bool OnCloseDocument();
 104
 105     // Prompts for saving if about to close a modified document. Returns TRUE
 106     // if ok to close the document (may have saved in the meantime, or set
 107     // modified to FALSE)
 108     virtual bool OnSaveModified();
 109
 110     // Called by framework if created automatically by the default document
 111     // manager: gives document a chance to initialise and (usually) create a
 112     // view
 113     virtual bool OnCreate(const wxString& path, long flags);
 114
 115     // By default, creates a base wxCommandProcessor.
 116     virtual wxCommandProcessor *OnCreateCommandProcessor();
 117     virtual wxCommandProcessor *GetCommandProcessor() const { return m_commandProcessor; }
 118     virtual void SetCommandProcessor(wxCommandProcessor *proc) { m_commandProcessor = proc; }
 119
 120     // Called after a view is added or removed. The default implementation
 121     // deletes the document if this is there are no more views.
 122     virtual void OnChangedViewList();
 123
 124     virtual bool DeleteContents();
 125
 126     virtual bool Draw(wxDC&);
 127     virtual bool IsModified() const { return m_documentModified; }
 128     virtual void Modify(bool mod) { m_documentModified = mod; }
 129
 130     virtual bool AddView(wxView *view);
 131     virtual bool RemoveView(wxView *view);
 132     wxList& GetViews() const { return (wxList&) m_documentViews; }
 133     wxView *GetFirstView() const;
 134
 135     virtual void UpdateAllViews(wxView *sender = (wxView *) NULL, wxObject *hint = (wxObject *) NULL);
 136     virtual void NotifyClosing();
 137
 138     // Remove all views (because we're closing the document)
 139     virtual bool DeleteAllViews();
 140
 141     // Other stuff
 142     virtual wxDocManager *GetDocumentManager() const;
 143     virtual wxDocTemplate *GetDocumentTemplate() const { return m_documentTemplate; }
 144     virtual void SetDocumentTemplate(wxDocTemplate *temp) { m_documentTemplate = temp; }
 145
 146     // Get title, or filename if no title, else [unnamed]
 147     virtual bool GetPrintableName(wxString& buf) const;
 148
 149     // Returns a window that can be used as a parent for document-related
 150     // dialogs. Override if necessary.
 151     virtual wxWindow *GetDocumentWindow() const;
 152
 153 protected:
 154     wxList                m_documentViews;
 155     wxString              m_documentFile;
 156     wxString              m_documentTitle;
 157     wxString              m_documentTypeName;
 158     wxDocTemplate*        m_documentTemplate;
 159     bool                  m_documentModified;
 160     wxDocument*           m_documentParent;
 161     wxCommandProcessor*   m_commandProcessor;
 162     bool                  m_savedYet;
 163 };
 164
 165 class WXDLLEXPORT wxView: public wxEvtHandler
 166 {
 167     DECLARE_ABSTRACT_CLASS(wxView)
 168
 169 public:
 170     //  wxView(wxDocument *doc = (wxDocument *) NULL);
 171     wxView();
 172     ~wxView();
 173
 174     wxDocument *GetDocument() const { return m_viewDocument; }
 175     virtual void SetDocument(wxDocument *doc);
 176
 177     wxString GetViewName() const { return m_viewTypeName; }
 178     void SetViewName(const wxString& name) { m_viewTypeName = name; };
 179
 180     wxFrame *GetFrame() const { return m_viewFrame ; }
 181     void SetFrame(wxFrame *frame) { m_viewFrame = frame; }
 182
 183     virtual void OnActivateView(bool activate, wxView *activeView, wxView *deactiveView);
 184     virtual void OnDraw(wxDC *dc) = 0;
 185     virtual void OnPrint(wxDC *dc, wxObject *info);
 186     virtual void OnUpdate(wxView *sender, wxObject *hint = (wxObject *) NULL);
 187     virtual void OnClosingDocument() {};
 188     virtual void OnChangeFilename();
 189
 190     // Called by framework if created automatically by the default document
 191     // manager class: gives view a chance to initialise
 192     virtual bool OnCreate(wxDocument *WXUNUSED(doc), long WXUNUSED(flags)) { return TRUE; };
 193
 194     // Checks if the view is the last one for the document; if so, asks user
 195     // to confirm save data (if modified). If ok, deletes itself and returns
 196     // TRUE.
 197     virtual bool Close(bool deleteWindow = TRUE);
 198
 199     // Override to do cleanup/veto close
 200     virtual bool OnClose(bool deleteWindow);
 201
 202 #if WXWIN_COMPATIBILITY
 203     // Defeat compiler warning
 204     bool OnClose() { return wxEvtHandler::OnClose(); }
 205 #endif
 206
 207     // Extend event processing to search the document's event table
 208     virtual bool ProcessEvent(wxEvent& event);
 209
 210     // A view's window can call this to notify the view it is (in)active.
 211     // The function then notifies the document manager.
 212     virtual void Activate(bool activate);
 213
 214     wxDocManager *GetDocumentManager() const
 215         { return m_viewDocument->GetDocumentManager(); }
 216
 217 #if wxUSE_PRINTING_ARCHITECTURE
 218     virtual wxPrintout *OnCreatePrintout();
 219 #endif
 220
 221 protected:
 222     wxDocument*       m_viewDocument;
 223     wxString          m_viewTypeName;
 224     wxFrame*          m_viewFrame;
 225 };
 226
 227 // Represents user interface (and other) properties of documents and views
 228 class WXDLLEXPORT wxDocTemplate: public wxObject
 229 {
 230 DECLARE_CLASS(wxDocTemplate)
 231
 232 friend class WXDLLEXPORT wxDocManager;
 233
 234 public:
 235     // Associate document and view types. They're for identifying what view is
 236     // associated with what template/document type
 237     wxDocTemplate(wxDocManager *manager,
 238                   const wxString& descr,
 239                   const wxString& filter,
 240                   const wxString& dir,
 241                   const wxString& ext,
 242                   const wxString& docTypeName,
 243                   const wxString& viewTypeName,
 244                   wxClassInfo *docClassInfo = (wxClassInfo *) NULL,
 245                   wxClassInfo *viewClassInfo = (wxClassInfo *)NULL,
 246                   long flags = wxDEFAULT_TEMPLATE_FLAGS);
 247
 248     ~wxDocTemplate();
 249
 250     // By default, these two member functions dynamically creates document and
 251     // view using dynamic instance construction. Override these if you need a
 252     // different method of construction.
 253     virtual wxDocument *CreateDocument(const wxString& path, long flags = 0);
 254     virtual wxView *CreateView(wxDocument *doc, long flags = 0);
 255
 256     wxString GetDefaultExtension() const { return m_defaultExt; };
 257     wxString GetDescription() const { return m_description; }
 258     wxString GetDirectory() const { return m_directory; };
 259     wxDocManager *GetDocumentManager() const { return m_documentManager; }
 260     void SetDocumentManager(wxDocManager *manager) { m_documentManager = manager; }
 261     wxString GetFileFilter() const { return m_fileFilter; };
 262     long GetFlags() const { return m_flags; };
 263     virtual wxString GetViewName() const { return m_viewTypeName; }
 264     virtual wxString GetDocumentName() const { return m_docTypeName; }
 265
 266     void SetFileFilter(const wxString& filter) { m_fileFilter = filter; };
 267     void SetDirectory(const wxString& dir) { m_directory = dir; };
 268     void SetDescription(const wxString& descr) { m_description = descr; };
 269     void SetDefaultExtension(const wxString& ext) { m_defaultExt = ext; };
 270     void SetFlags(long flags) { m_flags = flags; };
 271
 272     bool IsVisible() const { return ((m_flags & wxTEMPLATE_VISIBLE) == wxTEMPLATE_VISIBLE); }
 273
 274     virtual bool FileMatchesTemplate(const wxString& path);
 275
 276 protected:
 277     long              m_flags;
 278     wxString          m_fileFilter;
 279     wxString          m_directory;
 280     wxString          m_description;
 281     wxString          m_defaultExt;
 282     wxString          m_docTypeName;
 283     wxString          m_viewTypeName;
 284     wxDocManager*     m_documentManager;
 285
 286     // For dynamic creation of appropriate instances.
 287     wxClassInfo*      m_docClassInfo;
 288     wxClassInfo*      m_viewClassInfo;
 289 };
 290
 291 // One object of this class may be created in an application, to manage all
 292 // the templates and documents.
 293 class WXDLLEXPORT wxDocManager: public wxEvtHandler
 294 {
 295     DECLARE_DYNAMIC_CLASS(wxDocManager)
 296
 297 public:
 298     wxDocManager(long flags = wxDEFAULT_DOCMAN_FLAGS, bool initialize = TRUE);
 299     ~wxDocManager();
 300
 301     virtual bool Initialize();
 302
 303     // Handlers for common user commands
 304     void OnFileClose(wxCommandEvent& event);
 305     void OnFileCloseAll(wxCommandEvent& event);
 306     void OnFileNew(wxCommandEvent& event);
 307     void OnFileOpen(wxCommandEvent& event);
 308     void OnFileRevert(wxCommandEvent& event);
 309     void OnFileSave(wxCommandEvent& event);
 310     void OnFileSaveAs(wxCommandEvent& event);
 311     void OnPrint(wxCommandEvent& event);
 312     void OnPrintSetup(wxCommandEvent& event);
 313     void OnPreview(wxCommandEvent& event);
 314     void OnUndo(wxCommandEvent& event);
 315     void OnRedo(wxCommandEvent& event);
 316
 317     // Handlers for UI update commands
 318     void OnUpdateFileOpen(wxUpdateUIEvent& event);
 319     void OnUpdateFileClose(wxUpdateUIEvent& event);
 320     void OnUpdateFileRevert(wxUpdateUIEvent& event);
 321     void OnUpdateFileNew(wxUpdateUIEvent& event);
 322     void OnUpdateFileSave(wxUpdateUIEvent& event);
 323     void OnUpdateFileSaveAs(wxUpdateUIEvent& event);
 324     void OnUpdateUndo(wxUpdateUIEvent& event);
 325     void OnUpdateRedo(wxUpdateUIEvent& event);
 326
 327     void OnUpdatePrint(wxUpdateUIEvent& event);
 328     void OnUpdatePrintSetup(wxUpdateUIEvent& event);
 329     void OnUpdatePreview(wxUpdateUIEvent& event);
 330
 331     // Extend event processing to search the view's event table
 332     virtual bool ProcessEvent(wxEvent& event);
 333
 334     // called when file format detection didn't work, can be overridden to do
 335     // something in this case
 336     // This is of course completely stupid, because if the file dialog is
 337     // cancelled you get an assert. Brilliant. -- JACS
 338 //    virtual void OnOpenFileFailure() { wxFAIL_MSG(_T("file format mismatch")); }
 339     virtual void OnOpenFileFailure() { }
 340
 341     virtual wxDocument *CreateDocument(const wxString& path, long flags = 0);
 342     virtual wxView *CreateView(wxDocument *doc, long flags = 0);
 343     virtual void DeleteTemplate(wxDocTemplate *temp, long flags = 0);
 344     virtual bool FlushDoc(wxDocument *doc);
 345     virtual wxDocTemplate *MatchTemplate(const wxString& path);
 346     virtual wxDocTemplate *SelectDocumentPath(wxDocTemplate **templates,
 347             int noTemplates, wxString& path, long flags, bool save = FALSE);
 348     virtual wxDocTemplate *SelectDocumentType(wxDocTemplate **templates,
 349             int noTemplates, bool sort = FALSE);
 350     virtual wxDocTemplate *SelectViewType(wxDocTemplate **templates,
 351             int noTemplates, bool sort = FALSE);
 352     virtual wxDocTemplate *FindTemplateForPath(const wxString& path);
 353
 354     void AssociateTemplate(wxDocTemplate *temp);
 355     void DisassociateTemplate(wxDocTemplate *temp);
 356
 357     wxDocument *GetCurrentDocument() const;
 358
 359     void SetMaxDocsOpen(int n) { m_maxDocsOpen = n; }
 360     int GetMaxDocsOpen() const { return m_maxDocsOpen; }
 361
 362     // Add and remove a document from the manager's list
 363     void AddDocument(wxDocument *doc);
 364     void RemoveDocument(wxDocument *doc);
 365
 366     // closes all currently open documents
 367     bool CloseDocuments(bool force = TRUE);
 368
 369     // Clear remaining documents and templates
 370     bool Clear(bool force = TRUE);
 371
 372     // Views or windows should inform the document manager
 373     // when a view is going in or out of focus
 374     virtual void ActivateView(wxView *view, bool activate = TRUE, bool deleting = FALSE);
 375     virtual wxView *GetCurrentView() const;
 376
 377     wxList& GetDocuments() { return m_docs; }
 378     wxList& GetTemplates() { return m_templates; }
 379
 380     // Make a default document name
 381     virtual bool MakeDefaultName(wxString& buf);
 382
 383     // Make a frame title (override this to do something different)
 384     virtual wxString MakeFrameTitle(wxDocument* doc);
 385
 386     virtual wxFileHistory *OnCreateFileHistory();
 387     virtual wxFileHistory *GetFileHistory() const { return m_fileHistory; }
 388
 389     // File history management
 390     virtual void AddFileToHistory(const wxString& file);
 391     virtual void RemoveFileFromHistory(int i);
 392     virtual int GetNoHistoryFiles() const;
 393     virtual wxString GetHistoryFile(int i) const;
 394     virtual void FileHistoryUseMenu(wxMenu *menu);
 395     virtual void FileHistoryRemoveMenu(wxMenu *menu);
 396 #if wxUSE_CONFIG
 397     virtual void FileHistoryLoad(wxConfigBase& config);
 398     virtual void FileHistorySave(wxConfigBase& config);
 399 #endif // wxUSE_CONFIG
 400
 401     virtual void FileHistoryAddFilesToMenu();
 402     virtual void FileHistoryAddFilesToMenu(wxMenu* menu);
 403
 404     inline wxString GetLastDirectory() const { return m_lastDirectory; }
 405     inline void SetLastDirectory(const wxString& dir) { m_lastDirectory = dir; }
 406
 407     // Get the current document manager
 408     static wxDocManager* GetDocumentManager() { return sm_docManager; }
 409
 410 protected:
 411     long              m_flags;
 412     int               m_defaultDocumentNameCounter;
 413     int               m_maxDocsOpen;
 414     wxList            m_docs;
 415     wxList            m_templates;
 416     wxView*           m_currentView;
 417     wxFileHistory*    m_fileHistory;
 418     wxString          m_lastDirectory;
 419     static wxDocManager* sm_docManager;
 420
 421     DECLARE_EVENT_TABLE()
 422 };
 423
 424 // ----------------------------------------------------------------------------
 425 // A default child frame
 426 // ----------------------------------------------------------------------------
 427
 428 class WXDLLEXPORT wxDocChildFrame : public wxFrame
 429 {
 430     DECLARE_CLASS(wxDocChildFrame)
 431
 432 public:
 433     wxDocChildFrame(wxDocument *doc,
 434                     wxView *view,
 435                     wxFrame *frame,
 436                     wxWindowID id,
 437                     const wxString& title,
 438                     const wxPoint& pos = wxDefaultPosition,
 439                     const wxSize& size = wxDefaultSize,
 440                     long type = wxDEFAULT_FRAME_STYLE,
 441                     const wxString& name = "frame");
 442     ~wxDocChildFrame();
 443
 444     // Extend event processing to search the view's event table
 445     virtual bool ProcessEvent(wxEvent& event);
 446
 447     void OnActivate(wxActivateEvent& event);
 448     void OnCloseWindow(wxCloseEvent& event);
 449
 450     wxDocument *GetDocument() const { return m_childDocument; }
 451     wxView *GetView() const { return m_childView; }
 452     void SetDocument(wxDocument *doc) { m_childDocument = doc; }
 453     void SetView(wxView *view) { m_childView = view; }
 454     bool Destroy() { m_childView = (wxView *)NULL; return wxFrame::Destroy(); }
 455
 456 protected:
 457     wxDocument*       m_childDocument;
 458     wxView*           m_childView;
 459
 460     DECLARE_EVENT_TABLE()
 461 };
 462
 463 // ----------------------------------------------------------------------------
 464 // A default parent frame
 465 // ----------------------------------------------------------------------------
 466
 467 class WXDLLEXPORT wxDocParentFrame : public wxFrame
 468 {
 469     DECLARE_CLASS(wxDocParentFrame)
 470
 471 public:
 472     wxDocParentFrame(wxDocManager *manager,
 473                      wxFrame *frame,
 474                      wxWindowID id,
 475                      const wxString& title,
 476                      const wxPoint& pos = wxDefaultPosition,
 477                      const wxSize& size = wxDefaultSize,
 478                      long type = wxDEFAULT_FRAME_STYLE,
 479                      const wxString& name = "frame");
 480
 481     // Extend event processing to search the document manager's event table
 482     virtual bool ProcessEvent(wxEvent& event);
 483
 484     wxDocManager *GetDocumentManager() const { return m_docManager; }
 485
 486     void OnExit(wxCommandEvent& event);
 487     void OnMRUFile(wxCommandEvent& event);
 488     void OnCloseWindow(wxCloseEvent& event);
 489
 490 protected:
 491     wxDocManager *m_docManager;
 492
 493     DECLARE_EVENT_TABLE()
 494 };
 495
 496 // ----------------------------------------------------------------------------
 497 // Provide simple default printing facilities
 498 // ----------------------------------------------------------------------------
 499
 500 #if wxUSE_PRINTING_ARCHITECTURE
 501 class WXDLLEXPORT wxDocPrintout : public wxPrintout
 502 {
 503     DECLARE_DYNAMIC_CLASS(wxDocPrintout)
 504
 505 public:
 506     wxDocPrintout(wxView *view = (wxView *) NULL, const wxString& title = "Printout");
 507     bool OnPrintPage(int page);
 508     bool HasPage(int page);
 509     bool OnBeginDocument(int startPage, int endPage);
 510     void GetPageInfo(int *minPage, int *maxPage, int *selPageFrom, int *selPageTo);
 511
 512     virtual wxView *GetView() { return m_printoutView; }
 513
 514 protected:
 515     wxView*       m_printoutView;
 516 };
 517 #endif // wxUSE_PRINTING_ARCHITECTURE
 518
 519 // ----------------------------------------------------------------------------
 520 // File history management
 521 // ----------------------------------------------------------------------------
 522
 523 class WXDLLEXPORT wxFileHistory : public wxObject
 524 {
 525     DECLARE_DYNAMIC_CLASS(wxFileHistory)
 526
 527 public:
 528     wxFileHistory(int maxFiles = 9);
 529     ~wxFileHistory();
 530
 531     // Operations
 532     virtual void AddFileToHistory(const wxString& file);
 533     virtual void RemoveFileFromHistory(int i);
 534     virtual int GetMaxFiles() const { return m_fileMaxFiles; }
 535     virtual void UseMenu(wxMenu *menu);
 536
 537     // Remove menu from the list (MDI child may be closing)
 538     virtual void RemoveMenu(wxMenu *menu);
 539
 540 #if wxUSE_CONFIG
 541     virtual void Load(wxConfigBase& config);
 542     virtual void Save(wxConfigBase& config);
 543 #endif // wxUSE_CONFIG
 544
 545     virtual void AddFilesToMenu();
 546     virtual void AddFilesToMenu(wxMenu* menu); // Single menu
 547
 548     // Accessors
 549     virtual wxString GetHistoryFile(int i) const;
 550
 551     // A synonym for GetNoHistoryFiles
 552     virtual int GetCount() const { return m_fileHistoryN; }
 553     int GetNoHistoryFiles() const { return m_fileHistoryN; }
 554
 555     wxList& GetMenus() const { return (wxList&) m_fileMenus; }
 556
 557 protected:
 558     // Last n files
 559     wxChar**          m_fileHistory;
 560     // Number of files saved
 561     int               m_fileHistoryN;
 562     // Menus to maintain (may need several for an MDI app)
 563     wxList            m_fileMenus;
 564     // Max files to maintain
 565     int               m_fileMaxFiles;
 566 };
 567
 568 #if wxUSE_STD_IOSTREAM
 569 // For compatibility with existing file formats:
 570 // converts from/to a stream to/from a temporary file.
 571 bool WXDLLEXPORT wxTransferFileToStream(const wxString& filename, wxSTD ostream& stream);
 572 bool WXDLLEXPORT wxTransferStreamToFile(wxSTD istream& stream, const wxString& filename);
 573 #else
 574 // For compatibility with existing file formats:
 575 // converts from/to a stream to/from a temporary file.
 576 bool WXDLLEXPORT wxTransferFileToStream(const wxString& filename, wxOutputStream& stream);
 577 bool WXDLLEXPORT wxTransferStreamToFile(wxInputStream& stream, const wxString& filename);
 578 #endif
 579
 580 #endif // _WX_DOCH__